[IfcRelSpaceBoundary1stLevel.InnerBoundaries property 内部边界 public IfcCollection<IfcRelSpaceBoundary1stLevel> InnerBoundaries { get; } 也可以看看 class IfcCollection<T> class IfcRelSpaceBoundary1stLevel 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
